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Trees

, Volume 24, Issue 3, pp 479–490 | Cite as

Climate signal in tree-ring chronologies of Pinus peuce and Pinus heldreichii from the Pirin Mountains in Bulgaria

  • Momchil Panayotov
  • Peter Bebi
  • Valerie Trouet
  • Steffan Yurukov
Original Paper
First Online:
Received:
Revised:
Accepted:

Abstract

Numerous proxy climate reconstructions have been developed for Europe, but there are still regions with limited data of this kind. One region is the Balkan Peninsula, which is characterized by complex interactions between mountains and climate. We present and discuss two tree-ring chronologies—a 758-year-long one of Pinus heldreichii Christ and 340-year-long one of Pinus peuce Griseb. from treeline locations in the Pirin Mountains in Bulgaria. Climate–growth relationships were computed with bootstrap correlation functions and their consistency over time assessed by calculating the correlations over shortened periods. In addition, we reviewed and analyzed climate situations in years with unusually narrow or wide tree rings. Both species were negatively influenced by previous summer drought conditions and cold winters. Early summer temperatures were positively correlated with P. peuce radial growth, whereas P. heldreichii displayed dependence on summer precipitation. In the second half of the twentieth century, the P. heldreichii trees displayed higher sensitivity to summer drought, which was probably a result of increased summer temperatures and decreased winter precipitation. Our findings contribute to more reliable proxy climate records for the region.

Keywords

Tree ring Pinus peuce Pinus heldreichii Temperature sensitivity Treeline Balkan Peninsula 
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Notes

Acknowledgments

This work was supported by the Science Fund of the University of Forestry in Sofia, Project 115/2008 and by the Velux Foundation, Project No. 414. We would like to thank Mrs. Pravda Dimitrova from the National Meteorological Institute in Sofia for assistance in obtaining climate data. We are grateful to Melissa Martin for improving the English language. Alexander Dountchev, Yanitca Todorova, Albena Ivanova and Neli Nikolova helped in data collection and cores measurement.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Momchil Panayotov
    • 1
    • 2
  • Peter Bebi
    • 1
  • Valerie Trouet
    • 3
  • Steffan Yurukov
    • 2
  1. 1.WSL Institute for Snow and Avalanche Research SLFDavos DorfSwitzerland
  2. 2.Dendrology DepartmentUniversity of ForestrySofiaBulgaria
  3. 3.Swiss Federal Institute for Forest, Snow and Landscape ResearchBirmensdorfSwitzerland

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